Samsung SGH-E340 - Speaker Part(Melody)

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Flow Chart of Troubleshooting
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7-11
7-6. Speaker Part(Melody)
U302 pin 5 = 2.9V?
Speaker does not work
Check the Clock signal at
Pin 1 of U303 (26MHz)
Check the clock generation circuit
(related to U100and U303)
No
Yes
No
Resolder or replace U302
Yes
U303 pin 17,18 ≒ 1.8V?
(When U303 operate)
Resolder U303
No
Yes
END
Is Speaker working?
Change the Speaker
No
Yes
Yes
CN703 pin 40,42 ≒ 1.8V?
(When U303 operate)
Resolder CN703
No
Yes